TROND Halo C Task Lamp, Eye-Care LED Clamp Table Light (11W, 5 Adjustable Color Temperatures, 5-Level Dimmer, 30-Minute Timer, USB Charging Port, Flexible Gooseneck, Flicker-Free), Black MOST POWERFUL CLAMP LAMP EVER. TROND Halo 11W-C is NOT a cheaply-made, mini clip-on book light. Instead, its a super-bright, full-sized clamp light with all the functionalities. It boasts of various color temperatures and light intensities, which can rarely be found on a regular desk lamp. Its flicker-free, anti-glare light with the total flux of 1000 flux is perfect for reading, crafting, sewing, knitting, crocheting, painting, etc. STRONG CLAMP & FLEXIBLE GOOSENECK. Durable gooseneck arm (41cm/16.1 long) enables you to tilt & swivel the lamp at will; Strong clamp opens up to 1.38" width (optimal 0.6"-1.1" width) and can be used perfectly with desk, headboard, piano, sewing table, drafting table, drawing table, etc. Please do the measurement before placing your order LOTS OF LIGHT OPTIONS. With 5 distinctive lighting modes and 5-level dimmer, TROND Halo 11W-C allows you to choose the right color temperature (cool white, daylight, warm white) at different light intensities, so as to cater to your various lighting moods  working / reading / relaxing. The integrate memory function remembers the previous setting from your last use LIGHT TIMER & USB CHARGING PORT. Long press the on/off switch for 2 seconds to activate the light timer, and the lamp will power off automatically in 30 minutes. Its also built with a USB charging port in the rear which can charge your 5V electronic devices including iPad, iPhone and Android smartphones WHAT YOU GET: TROND Halo 11W-C Clamp LED Desk Lamp (Upgraded with Premium Diffusion Film  50% brighter), 6ft UL-certified detachable power Adapter, Welcome Guide, 18-MONTH TROND warranty & 30-DAY money back guarantee